(57) A transmitter for providing inventory or inventory transfer information on industrial
sites is described, for measurement of mass (M), weight (W), volume (V), level (L)
and/or density (ρ) of a product (1) in a vessel (3) comprising: a level sensor (5),
comprising: a conductive probe (9) extending into the vessel (3), means (11, 13) for
generating and sending short electromagnetic pulses (S) down the probe, means (15)
for reception of echoes (E) of the pulses (S) reflected at a surface of the product
(1), means (17) for determining a time of flight (t) needed for a pulse (S) to travel
down the probe (9) and its echo (E) to return, a pressure sensor (7), mounted on the
probe (9), and a signal processing unit (45) for determining mass (M), weight (W),
volume (V), level (L) and/or density (ρ) based on measurement signals supplied by
the level sensor (5) and the pressure sensor (7).
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